502461991 has 2 divisors, whose sum is σ = 502461992. Its totient is φ = 502461990.

The previous prime is 502461983. The next prime is 502462019. The reversal of 502461991 is 199164205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 502461991 - 2³ = 502461983 is a prime.

It is a super-3 number, since 3×502461991³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 502461991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (502467991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251230995 + 251230996.

It is an arithmetic number, because the mean of its divisors is an integer number (251230996).

Almost surely, 2^502461991 is an apocalyptic number.

502461991 is a deficient number, since it is larger than the sum of its proper divisors (1).

502461991 is an equidigital number, since it uses as much as digits as its factorization.

502461991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 502461991 is about 22415.6639651829. The cubic root of 502461991 is about 795.0011159880.

The spelling of 502461991 in words is "five hundred two million, four hundred sixty-one thousand, nine hundred ninety-one".